Summary:
This is potentially the cause of failures:
Failure in Destroy restore dir with: IO error: file rmdir: /dev/shm/rocksdb/rocksdb_crashtest_whitebox/.restore13: Directory not empty
Pull Request resolved: https://github.com/facebook/rocksdb/pull/7384
Test Plan: smoke test blackbox_crash_test
Reviewed By: jay-zhuang
Differential Revision: D23685087
Pulled By: pdillinger
fbshipit-source-id: 55f62e9853ce84be1d5ca7d856de867f0f2596ee